KR100822707B1 - Apparatus and method for managing quality of service in integrated network of heterogeneous mobile networks - Google Patents

Apparatus and method for managing quality of service in integrated network of heterogeneous mobile networks Download PDF

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Publication number
KR100822707B1
KR100822707B1 KR1020060120832A KR20060120832A KR100822707B1 KR 100822707 B1 KR100822707 B1 KR 100822707B1 KR 1020060120832 A KR1020060120832 A KR 1020060120832A KR 20060120832 A KR20060120832 A KR 20060120832A KR 100822707 B1 KR100822707 B1 KR 100822707B1
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South Korea
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policy
network
information
service
means
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KR1020060120832A
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Korean (ko)
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김영진
김형섭
신연승
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한국전자통신연구원
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00Traffic regulation in packet switching networks
    • H04L47/70Admission control or resource allocation
    • H04L47/82Miscellaneous aspects
    • H04L47/824Applicable to portable or mobile terminals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00Routing or path finding of packets in data switching networks
    • H04L45/30Special provisions for routing multiclass traffic
    • H04L45/308Route determination based on user's profile, e.g. premium users
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00Traffic regulation in packet switching networks
    • H04L47/70Admission control or resource allocation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00Traffic regulation in packet switching networks
    • H04L47/70Admission control or resource allocation
    • H04L47/80Actions related to the nature of the flow or the user
    • H04L47/808User-type aware

Abstract

1. TECHNICAL FIELD OF THE INVENTION
The present invention relates to a service quality management apparatus and method in an integrated network system.
2. The technical problem to be solved by the invention
According to the present invention, in the 3rd generation evolutionary mobile communication system in which different radio access technologies (RATs) are mixed and operated, a condition of a policy is calculated by using a user profile and network information. Provides an apparatus and method for service quality management in an integrated network system for efficiently managing quality of service (QoS) by determining a network equipment control algorithm using a condition and processing a service using a corresponding policy. Its purpose is to.
3. Summary of Solution to Invention
The present invention provides a service quality management apparatus in an integrated network system, comprising: information providing means for providing policy information corresponding to a user profile and network information and a network equipment control algorithm; Condition calculating means for calculating a condition on which the policy is based on the user profile and the network information from the information providing means; Policy determining means for determining a network equipment control algorithm according to the condition calculated by the condition calculating means, and receiving policy information corresponding to the determined network equipment control algorithm from the information providing means and requesting resource allocation; And resource allocating means for allocating the corresponding resource according to the resource allocation request from the policy determining means.
4. Important uses of the invention
The present invention is used for service quality management and the like.

Description

Apparatus and method for managing Quality of service in integrated network of heterogeneous mobile networks

1 is a configuration diagram of an embodiment of a 3GPP LTE system to which the present invention is applied;

2 is a configuration diagram of an apparatus for managing service quality in an integrated network system according to the present invention;

3 is a flowchart illustrating a service quality management method in an integrated network system according to the present invention.

* Explanation of symbols for the main parts of the drawings

21: PHSS 22: Profile Monitor

23: Conditioner 24: Network Monitor

25: Ruler 26: GRM

The present invention relates to an apparatus and a method for managing a quality of service in an integrated network system. More specifically, the present invention relates to a third generation evolved mobile communication system in which different radio access technologies (RATs) are mixed and operated. Using the profile and the network information to calculate the conditions that are the basis of the policy, using the calculated conditions to determine the network equipment control algorithm, and processing the service using the corresponding policy, QoS (Quality of Service) efficiently The present invention relates to a service quality management apparatus and a method thereof in an integrated network system for managing a network.

In an embodiment of the present invention, a 3GPP LTE (Long Term Evolution) system will be described as an integrated network environment (system).

The third generation evolutionary mobile communication is a technology that is being standardized by 3GPP (3rd Generation Partnership Project), the international standardization organization of mobile communication. The basic definition is the concept of evolving the existing mobile communication system as a new system for a long time. It is named Long Term Evolution.

Unlike general systems where third generation single networks exist independently, user's QoS requirements will be very complicated in future mobile communication systems. In particular, in this environment, support for mobility between heterogeneous systems with a single terminal is a very important problem, and in fact, discussions are actively being made on 3GPP LTE.

The 3GPP LTE system will have an integrated network structure in which a mobile network and a wired network are converged. The integrated network includes a mobile communication network, an x digital subscriber line (xDSL) and a wired home network, a public switched telephone network (PSTN) network, and a hotspot. Spot-based wireless network works in conjunction with each other. This type of wired / wireless convergence network will use IP as a whole.

The Internet generally provides services based on best-effort transmission. This is very difficult to satisfy the complex / different QoS conditions anticipated in the future. Proposed methods for this include InServ (Integrated Services), DiffServ (Differentiated Services), NSIS (Next Step in Signaling), MPLS (Multi-Protocol Label Switching). These technologies are basically methods to guarantee QoS in wired IP network, and the simple operation procedure is as follows.

First, in order to provide end-to-end QoS for various IP applications, the IntServ scheme describes the characteristics of traffic and service requirements for applications, and provides QoS for each service session based on this. In addition, RSVP (Resource reSerVation Protocol) is used to perform a signaling procedure for reserving resources according to the QoS requirements of the user to each functional node existing in the traffic path and transmit user traffic.

An application that wants to establish a connection starts an RSVP procedure to reserve a resource, and delivers the requested RSVP QoS request information to a policy control module and an admission control module. Then, the admission control module determines whether to allocate the resource based on the requested QoS information, and before allocating the resource, the RSVP processor module interworks with the policy control module to confirm the permission of the user who performed the resource request. .

When the resource allocation confirmation procedure is finished in the policy control module and the admission control module, the RSVP processor module sets parameters for QoS services required by the packet classifier and the packet scheduler. In this case, the packet classifier performs a function of sorting data packets belonging to different QoS classes, and the packet scheduler performs scheduling of packets output according to QoS parameters set by the RSVP processor module.

Next, the DiffServ scheme has been proposed to compensate for the problems in the IntServ scheme, and provides differentiated services by classifying packets according to the class of traffic at the edge node of the network. The state of the traffic is managed only at the edge nodes of the network and does not have resource reservation information at routers on the path.

In addition, the DiffServ scheme allows routers existing in the core network to perform scheduling and buffer management functions for one aggregated flow by combining a plurality of flows instead of individual flows. There is this.

In addition, since the DiffServ scheme does not have a signaling procedure for end-to-end QoS, the complexity of processing of signaling is smaller than that of IntServ / RSVP.

Next, the MPLS scheme is a mechanism that applies the concept of connection oriented used in an Asynchronous Transfer Mode (ATM) network and a frame relay network to the Internet using a hop by hop transmission scheme. It provides a QoS mechanism for setting up a virtual circuit using a signaling protocol and transmitting user data traffic prior to the transmission of the data stream.

This MPLS method inserts a fixed-length label into the header of a packet and transmits it, and determines the next hop through the header of the packet in the LSR (Label Switching Router) that receives the packet. Do this. The transmission path of a packet in the MPLS domain is defined as a label switched path (LSP), and the LSP is determined by setting a label value in the first LSR of the LSP.

After all, the basic concept of MPLS is a forwarding structure by replacing labels by interworking with different control modules, and each control module plays a role of assigning and distributing labels.

Lastly, the NSIS method is an area where the 'IETF NSIS WG' is promoting standardization work, and is an IP signaling protocol for providing guaranteed QoS in an IP network that currently provides the best effort type service. It is a system.

This protocol was originally a signaling protocol for end-to-end QoS that reuses, generalizes, and simplifies the proper part of RSVP, but has been reorganized as a protocol for setting constant state information for various components in the network. Accordingly, NSIS-based protocols are hierarchical, such as NLP Transport Layer Protocol (NTLP) as a common transport protocol and NSLP (NSIS Signaling Layer Protocol), a signaling protocol for application-specific (for middle box control such as QoS applications and firewalls). It was divided into structure and proceeded

As mentioned above, the NSIS scheme consists of two layers, NTLP and NSLP. In this case, NTLP is a common part of various signaling protocols of NSIS, and serves as a transport layer for delivering it.In NTLP's application signaling protocol, resource reservation protocol for QoS, NAT (Network Address Translator) or FW ( An intermediate device control protocol for setting up traffic to pass through a middle box on a network path such as a firewall).

As such, the NSIS method defines an application of signaling protocol to set new state information in any form in a network device, and may be considered as a representative example of resource reservation for QoS and setting of a flow for passing through NAT / FW. .

Eventually, signal application protocols are collectively referred to as NSLP, and this NSIS has a two-layer structure as a whole.

These conventional technologies can manage and provide QoS more efficiently in an advanced manner than the best service provisioning method, but since the basic target is a wired IP network and there are considerable limitations in its flexibility, heterogeneous network integrated systems can There is a problem that the application is not easy.

PBNM (Policy Based Network Management) is a proposed method to solve this problem, that is, to guarantee complex and diversified QoS and to be easily managed.

The PBNM proposed by the IETF is a network management technique for effective QoS management. The basic forms of the policy are defined as follows.

'If condition, then action'

This is called 'management / operation based on policy', and allows specific actions to be performed on certain predefined conditions. To this end, a variety of conditions and operations are defined in advance.

However, building such a large amount of data is not easy until the system is operational. Even if you have a policy for as many situations as you can foresee, there will certainly be some unexpected things happening. In this case, the network operator derives a new policy. If the policy for the situation is not prepared in advance, the nearest policy is used. If this is also not appropriate, new policy is learned in real time through learning.

The PBNM is composed of functions such as Policy Decision Point (PDP), Policy Repository (PR), and Policy Enforcement Point (PEP).

Looking at this in more detail as follows.

First, the PDP performs a function of determining a policy, that is, when a specific event occurs, the optimal policy is determined by considering various variables. At this time, the policy is a policy that is defined according to conditions (separated by variables) beforehand and is stored by the PR.

In other words, when an event occurs, the candidates are created by considering the variables that are appropriate to the situation, and the PDP decides the best policy among them. These policies can be searched in PR, which is a kind of database.

The policy thus determined is passed to the network component to instruct it to take a specific action. It is the PEP that performs a series of tasks according to this policy decision. In this case, PDP, PEP, PR, etc. refers to a conceptual function, but does not mean a physical form on a newly added network.

Meanwhile, the LTE standard structure proposed by 3GPP, an international standardization organization for mobile communication, proposes a function called PCRF (Policy and Charging Rule Function). PCRF is a function similar to PDP that manages policy management and billing for QoS management / provision. Again, the basic concept has been developed by the Internet Engineering Task Force (IETF), but it does not specify the policy decision procedure for managing the actual QoS, and the procedure of linking with PR, PEP, etc. required before the policy becomes effective, The structure itself does not even mention PR or PEP.

Accordingly, a method of newly defining the functions of PR and PEP in an integrated network system such as 3GPP LTE system using the concept of PCRF, and interworking with them, requires a method of deriving the actual policy.

The present invention has been proposed to solve the above problems, and in the 3rd generation evolutionary mobile communication system in which different radio access technologies (RATs) are mixed, the user profile and network information are used to In the integrated network system for efficiently managing QoS (Quality of Service) by calculating the underlying condition, determining the network equipment control algorithm using the calculated condition, and processing the service using the corresponding policy. It is an object of the present invention to provide a service quality management apparatus and method thereof.

Other objects and advantages of the present invention can be understood by the following description, and will be more clearly understood by the embodiments of the present invention. Also, it will be readily appreciated that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the claims.

An apparatus of the present invention for achieving the above object is a service quality management apparatus in an integrated network system, comprising: information providing means for providing policy information corresponding to a user profile, network information and network equipment control algorithm; Condition calculating means for calculating a condition on which the policy is based on the user profile and the network information from the information providing means; Policy determining means for determining a network equipment control algorithm according to the condition calculated by the condition calculating means, and receiving policy information corresponding to the determined network equipment control algorithm from the information providing means and requesting resource allocation; And resource allocation means for allocating the corresponding resource according to the resource allocation request from the policy determination means.

On the other hand, the method of the present invention, in the service quality management method in the integrated network system, using the user profile and network information to calculate a condition that is the basis of the policy; Determining a network equipment control algorithm according to the calculated condition; Receiving policy information corresponding to the determined network equipment control algorithm; And allocating resources for the provided policy.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, whereby those skilled in the art may easily implement the technical idea of the present invention. There will be. In addition, in describing the present invention, when it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a diagram illustrating an embodiment of a 3GPP LTE system to which the present invention is applied.

As shown in FIG. 1, the 3GPP LTE system to which the present invention is applied includes a plurality of heterogeneous access systems (GERAN, UTRAN, Evolved RAN, Trusted non 3GPP IP Access, WLAN Access NW), QoS and the respective heterogeneous access systems. Calculate conditions that are the basis of policy using local access manager (LAM) for managing resources, user profile and network information, determine network equipment control algorithm using the calculated conditions, and then use corresponding policy Global Access Manager (GAM) for processing services, and Policy and Home Subscriber Server (PHSS) for managing policies and user profiles.

When the present invention is implemented in a single network in the form of a local access manager (LAM), the LAM is an administrator of an access system, and performs functions such as mobility / resource management in each heterogeneous system, and a GAM is an administrator of an integrated network system. In order to efficiently manage the network, system information is integrated and managed.

2 is a configuration diagram of an apparatus for managing service quality in an integrated network system according to the present invention.

As shown in FIG. 2, the apparatus for managing quality of service in the integrated network system according to the present invention transmits the user profile to the profile monitor 22 according to the request of the user profile from the local network manager, and the ruler 25. In response to requesting a policy from the service management server 21 for providing the corresponding policy, a profile monitor 22 for delivering the user profile received from the service management server 21 to the conditioner 23, the profile After checking whether the user subscribes to the service using the user profile received from the monitor 22, the user profile is transmitted to the local network administrator, and the policy is applied using the received user profile and network information received from the network monitor 24. Conditioner 23 for calculating and passing the underlying conditions to the ruler 25, to the ruler 25 After determining the network equipment control algorithm according to the condition received from the network monitor 24 and the conditioner 23 for transmitting the network information, the corresponding policy is requested to the service management server 21 and transmitted to the GRM 26. Ruler 25 for requesting resource allocation, and a GRM 26 for allocating resources by checking a spare resource in response to requesting resource allocation from the ruler 25.

Here, the network monitor 24 obtains network information including the interference level and the noise level of the network at a specific time.

In addition, the profile monitor 22 provides information about whether a user subscribes to a specific system, whether or not a user subscribes to a service, and the speed of a mobile terminal.

In addition, the ruler 25 determines the admission control if the user applies for service use and the handover control if the user requests the handover.

Such a service quality management apparatus can solve the disadvantage of generating a lot of load and delay in actual signal processing due to the excessive interface due to the function distribution, which is a disadvantage of the conventional service quality management apparatus.

3 is a flowchart illustrating a service quality management method in an integrated network system according to the present invention.

First, the service management server (PHSS: Policy and Home Subscriber Server) 21 receives a user profile from a random network manager (LAM: Local Access Manager) (301).

The service management server 21 then transmits the profile of the service requester (user profile) to the profile monitor 22 (302).

Then, the profile monitor 22 transmits the received user profile to the conditioner 23 (303).

Thereafter, the conditioner 23 checks whether the user subscribes to the service and transmits the received user profile to the corresponding network manager (304, 305).

The network monitor 24 then collects the network information and forwards it to the conditioner 23 (306).

Then, the conditioner 23 calculates the condition that is the basis of the policy to be derived by using the network information received from the network monitor 24 and the user profile received from the profile monitor 22 (307).

Thereafter, the ruler 25 determines the network equipment control algorithm based on the condition calculated by the conditioner 23 and then requests the corresponding policy to the service management server 21 (308 to 310).

Then, the service management server 21 retrieves the corresponding policy and delivers it to the ruler 25 (311). In this case, if there is no corresponding policy, it may be added by receiving it from the outside.

Thereafter, the ruler 25 requests resource allocation to the global resource manager (GRM) 26 (312).

Then, the GRM 26 allocates resources as there are free network resources so that the corresponding service is processed (313). In this case, the policy information may be transmitted to the network manager so that the user may know the policy information.

As described above, the method of the present invention may be implemented as a program and stored in a recording medium (CD-ROM, RAM, ROM, floppy disk, hard disk, magneto-optical disk, etc.) in a computer-readable form. Since this process can be easily implemented by those skilled in the art will not be described in more detail.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the technical spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited by the drawings.

The present invention as described above, by calculating a condition that is the basis of the policy using the user profile and network information, by determining the network equipment control algorithm using the calculated conditions and by processing the service using the corresponding policy As a result, it is possible to efficiently manage the QoS (Quality of Service).

Claims (6)

  1. In the service quality management apparatus in the integrated network system,
    Information providing means for providing policy information corresponding to the user profile and the network information and the network equipment control algorithm;
    Condition calculating means for calculating a condition on which the policy is based on the user profile and the network information from the information providing means;
    Policy determining means for determining a network equipment control algorithm according to the condition calculated by the condition calculating means, and receiving policy information corresponding to the determined network equipment control algorithm from the information providing means and requesting resource allocation; And
    Resource allocation means for allocating a corresponding resource according to a resource allocation request from the policy determination means
    Quality of service management device in an integrated network system including a.
  2. The method of claim 1,
    The information providing means,
    Service management means for providing a corresponding user profile to a profile monitor according to a user profile request from a local network manager, and providing corresponding policy information according to a policy information request corresponding to a network equipment control algorithm from the policy determining means;
    The profile monitor for transferring the user profile provided from the service managing means to the condition calculating means; And
    Network monitor for providing network information to the condition calculating means
    Quality of service management device in an integrated network system including a.
  3. The method of claim 2,
    The condition calculating means,
    And a user profile from the service management means to check whether a user subscribes to a service.
  4. The method of claim 2 or 3,
    The profile monitor,
    A service quality management apparatus in an integrated network system, characterized by further performing a function of providing information on whether a user subscribes to a specific system, whether or not to subscribe to a service, and the speed of a mobile terminal.
  5. The method of claim 4, wherein
    The network monitor,
    Apparatus for managing a quality of service in an integrated network system, characterized in that to obtain network information including the interference level and the noise level of the network at a specific point in time.
  6. In the service quality management method in the integrated network system,
    Calculating a condition on which the policy is based on the user profile and the network information;
    Determining a network equipment control algorithm according to the calculated condition;
    Receiving policy information corresponding to the determined network equipment control algorithm; And
    Allocating resources for the received policy
    Quality of service management method in an integrated network system comprising a.
KR1020060120832A 2006-12-01 2006-12-01 Apparatus and method for managing quality of service in integrated network of heterogeneous mobile networks KR100822707B1 (en)

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